M3 - Non-metals, Wood

Question 1

wood

Answer 1

hard fibrous material that forms the main substance of the trunk or branches of a tree

Question 2

4 properties of wood

Answer 2

growth rings
water content
color
knots

Question 3

growth ring

Answer 3

a result of cell division between existing wood and the inner bark of new layers

Question 4

water content

Answer 4

makes wood substance softer and more bendable

Question 5

color

Answer 5

denotes that the wood has a diseased condition/unsoundness if it shows abnormal discoloration

Question 6

knots

Answer 6

imperfections as trees grows

Question 7

2 classification of wood

Answer 7

natural wood

engineered wood

Question 8

natural wood

Answer 8

produced naturally and has not been treated chemically

Question 9

2 types of natural wood

Answer 9

hard wood

soft wood

Question 10

hard wood (leaf-based)

Answer 10

complex structure
dark in color
higher density
heavy 
fire resistant

Question 11

soft wood (conifers)

Answer 11

less complex structure
light in color
lower density
lightweight
poor fire resistant

Question 12

engineered wood

Answer 12

man-made wood

Question 13

6 types of engineered wood

Answer 13

plywood
block board
medium-density fiber 
particle board
veneer
laminated wood

Question 14

plywood

Answer 14

wall sheathing, roofing, and cabinets

Question 15

block board

Answer 15

heavier and denser;

used for doors, tables, stands, and shelves

Question 16

medium-density fiber

Answer 16

for construction, like furniture, frames

Question 17

particle board

Answer 17

for flooring, wall paneling, ceilings, room dividers

Question 18

veneer

Answer 18

thin slices of wood, usually less than 3 mm, used for decorative purposes and are glued onto core panels;

for wall paneling

Question 19

laminated wood

Answer 19

typically has a shiny finish, and used for decorative purposes;
for cutting boards, table tops, picture frames

Question 20

7 production processes of wood

Answer 20

1. head rig
2. edging
3. trimming
4. rough lumber sorting
5. drying
6. plane
7. grading

Question 21

head rig

Answer 21

primary saw cuts

Question 22

edging

Answer 22

removing irregular edges and defects

Question 23

trimming

Answer 23

squaring off the ends of the lumber into uniform pieces based on market dimensions

Question 24

trimmer

Answer 24

device used in trimming wood

Question 25

rough lumber sorting

Answer 25

segregating pieces based on dimension and final product production (unseasoned or dry)

Question 26

drying

Answer 26

reduce moisture content in wood

Question 27

plane

Answer 27

smoothing the surface and making the measurements uniform

Question 28

grading

Answer 28

assessing the characteristics of each lumber piece to assign its grade/quality